[morsch]

However (from your source),

     Even if the description of the recipe is sufficiently creative and copyrightable, the copyright will not cover the recipe’s ingredient list, the underlying process for making the dish, or the resulting dish itself, which are all facts. It will only protect the expression of those facts. That means that someone can express the recipe in a different way — with different expression — and not infringe the recipe creator’s copyright.

So they can still put your recipe in a Jamie Oliver cookbook, they just have to put it in their own words as opposed to copy pasting it verbatim.